0.2－x/0.3-1.5=1-3x/2.5

3X*X-2X+6=8,X=?3X*X-2X+6=8，X=？则代数式1.5X*X-X+1=? x+2/x+3－x+1/x+2=x+8/x+9－x+7/x+8 0.3x＋7x-0.25x=21.58.7×(36-x)=04（不知道是x还是× 都解了吧）x或者×(x＋0.2)=1.27(x＋6)-3x=4x(2x＋5)3(x＋2)=4(x＋1)18-4x=2x-63.8x＋1.2x=256x＋1.5x=15呼呼.累死我了 着急 0.2－x/0.3-1.5=1-3x/2.5 (X+1)X(X+2)X(X+3)=504 一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X 1-0.5x/0.3-2/3x=0.3x/0.2x+1 数学题,一元一次方程. x-4=2-5x 4x-3（20-x)=5x-7(20-x) 1-2x-5/6=3-x/4 x/0.3-0.17-0.2x/0.02=1 x-2/6-x+2/3=x-1/2+10.01+0.02x/0.03-1-0.3x/0.2=1 *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || x-9/6-x+2/3=x-1 x/5-1.5=-1.2x+5 3(5-1.2x)+1.4=x-9/6-x+2/3=x-1x/5-1.5=-1.2x+53(5-1.2x)+1.4=-2(0.3x-1)1-x=-2(3x-2)-12/3x-3/2=1/4x-3/4(6x-5)+[2x-(4x-1)]=-24 (x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3) 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) x(x-2)-2x(x+1)-3x(x-5) 其中x=负½ x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x 请问这道题咋做 ：（x）X (x+1) X (x+2) X (x+3) =360 化简(2x-5)(3x+2)-6(x+1)(x-2),其中x=0.2 ①x＋1/3-x-2/6=4－x/2－2 ②x＋4/0.2－x－0.3/0.5=0.2